For romantic, you could go French (I'm having Bridesmaids flashbacks, though) and serve quiche, radishes with cultured butter and fleur de del, good baguettes, a selection of gooey French cheeses (stink=good), and individual seasonal fruit galettes or chocolate truffles.

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Definitely champagne as mentioned above (spring for the good stuff). Poached salmon fiilet with some kind of light sauce on the side with choice of filet of beef. Individual timbales of an asparagus purée. Mini croissants or mini popovers with raspberry whipped butter. Chocolate truffles, tiny butter cookies, and chocolate-dipped strawberries for dessert.